package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.github.xiaoymin.knife4j.core.util.CollectionUtils;
import com.sky.WebSocket.WebSocketServer;
import com.sky.constant.MessageConstant;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.CurrentHolderUtil;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

/**
 * @Author: XJH
 * @Description: TODO
 * @Date: 2025/6/8 22:33
 * @Version: 1.0
 */
@Service
@Slf4j
public class OrderSeriveImpl implements OrderService {
    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper  shoppingCartMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;
    @Autowired  //在paySuccess方法中调用，所以要加事务
    private WebSocketServer webSocketServer;

    /**
     * 用户下单
     * @param ordersSubmitDTO
     * @return
     */
    @Override
    @Transactional
    public OrderSubmitVO submit(OrdersSubmitDTO ordersSubmitDTO) {


        //处理各种业务异常(地址铺为空购物车数据为空)
      AddressBook addressBook= addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
      if(addressBook==null){
          throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);

      }
       // 检查用户的收货她址是香超出藏送范围
       // checkOutOfRange(  addressBook.getCityName() + addressBook.getDistrictName()+ addressBook.getDetail());

      //查询当前用户购物车数据
        Long userId = CurrentHolderUtil.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
      shoppingCart.setUserId(userId);
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if(shoppingCartList==null ||shoppingCartList.size()==0){
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }


        //向订单表插入1条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO,orders);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setOrderTime(LocalDateTime.now());
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setPayStatus(Orders.UN_PAID);
        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setAddress(addressBook.getDetail());
        orders.setUserId(userId);
        orders.setAmount(ordersSubmitDTO.getAmount());
        orderMapper.insert(orders);

        List<OrderDetail> orderDetailList = new ArrayList<>();
        //向订单明细表插入n条数据
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());//设置当前订单明细关联的订单ID
           orderDetailList.add(orderDetail);
        }
        orderDetailMapper.insertBantch(orderDetailList);

        //清空当前用户的购物车数据
   shoppingCartMapper.deleteByUserId(userId);

        //封装vo返回结果
       OrderSubmitVO  orderSubmitVO =   OrderSubmitVO.builder()
                .id(orders.getId())
                .orderTime(orders.getOrderTime())
                .orderNumber(orders.getNumber())
                 .orderAmount(orders.getAmount())
                .build();
   return orderSubmitVO;
    }
    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = CurrentHolderUtil.getCurrentId();
        User user = userMapper.getById(userId);

//        //调用微信支付接口，生成预支付交易单
//        JSONObject jsonObject = weChatPayUtil.pay(
//                ordersPaymentDTO.getOrderNumber(), //商户订单号
//                new BigDecimal(0.01), //支付金额，单位 元
//                "苍穹外卖订单", //商品描述
//                user.getOpenid() //微信用户的openid
//        );
//
//        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
//            throw new OrderBusinessException("该订单已支付");
//        }

        //        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        //        vo.setPackageStr(jsonObject.getString("package"));
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("code", "ORDERPAID");
        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        //为替代微信支付成功后的数据库订单状态更新，多定义一个方法进行修改
        Integer OrderPaidStatus = Orders.PAID; //支付状态，已支付
        Integer OrderStatus = Orders.TO_BE_CONFIRMED;  //订单状态，待接单

        //发现没有将支付时间 check_out属性赋值，所以在这里更新
        LocalDateTime check_out_time = LocalDateTime.now();

        //获取订单号码
        String orderNumber = ordersPaymentDTO.getOrderNumber();

        log.info("调用updateStatus，用于替换微信支付更新数据库状态的问题");
        orderMapper.updateStatus(OrderStatus, OrderPaidStatus, check_out_time, orderNumber);

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(ordersPaymentDTO.getOrderNumber());
        //通过WebSocket向客户端推送订单状态 type orderId content
        Map map = new HashMap<>();
        map.put("type", 1);//1表示来订单状态消息
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号：" + ordersDB.getNumber());

        webSocketServer.sendToAllClient(JSON.toJSONString(map));
        return vo;


    }
    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
//
//        //通过WebSocket向客户端推送订单状态 type orderId content
//        Map map = new HashMap<>();
//        map.put("type", 1);//1表示来订单状态消息
//        map.put("orderId", ordersDB.getId());
//        map.put("content", "订单号：" + ordersDB.getNumber());
//
//        webSocketServer.sendToAllClient(JSON.toJSONString(map));

    }

    /**
     * 用户端订单分页查询
     *
     * @param pageNum
     * @param pageSize
     * @param status
     * @return
     */
    public PageResult pageQuery4User(int pageNum, int pageSize, Integer status) {
        // 设置分页
        PageHelper.startPage(pageNum, pageSize);

        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(CurrentHolderUtil.getCurrentId());
        ordersPageQueryDTO.setStatus(status);

        // 分页条件查询
        Page<Orders> page = orderMapper.listhistoryOrders(ordersPageQueryDTO);

        List<OrderVO> list = new ArrayList();

        // 查询出订单明细，并封装入OrderVO进行响应
        if (page != null && page.getTotal() > 0) {
            for (Orders orders : page) {
                Long orderId = orders.getId();// 订单id

                // 查询订单明细
                List<OrderDetail> orderDetails = orderDetailMapper.getByOrderId(orderId);

                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                orderVO.setOrderDetailList(orderDetails);

                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(), list);
    }

    /**
     * 查询订单详情
     * @param id 订单ID
     * @return 订单详情VO，若未查询到订单则返回 null 或可根据需求返回空 VO
     */
    @Override
    public OrderVO getById(Long id) {
        // 1. 查询订单基础信息
        Orders orders = orderMapper.getById(id);

        // 若订单基础信息为 null，直接返回 null（或可初始化空 OrderVO 返回，根据业务需求决定）
        if (orders == null) {
            return null;
        }

        // 2. 初始化 OrderVO 并拷贝基础属性
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders, orderVO);

        // 3. 查询该订单对应的菜品/套餐明细
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    /**
     * 取消订单
     * @param id
     */
    @Override
    public void cancelOrder(Long id) throws Exception {
       Orders ordersDB=  orderMapper.getById(id);
        // 订单处于待接单状态下取消，需要进行退款
       if(ordersDB.getStatus()>2){
           throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
       }
        Orders orders = new Orders();
       orders.setId(ordersDB.getId());
       if(ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED))
       {
           weChatPayUtil.refund(
                   ordersDB.getNumber(), //商户订单号
                   ordersDB.getNumber(), //商户退款单号
                   new BigDecimal(0.01),//退款金额，单位 元
                   new BigDecimal(0.01));//原订单金额
           //支付状态修改为 退款
           orders.setPayStatus(Orders.REFUND);
       }
        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
       orders.setCancelReason("用户取消");
       orders.setCancelTime(LocalDateTime.now());
       orderMapper.update(orders);
    }
    /**
     * 再来一单
     * @param id
     * @return
     */
    @Override
    public void repetition(Long id) {
        // 根据订单id查询当前订单详情
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);

        Long userId = CurrentHolderUtil.getCurrentId();
        // 将订单详情对象转换为购物车对象
      List<ShoppingCart> shoppingCartList=  orderDetailList.stream().map(orderDetail -> {
            ShoppingCart shoppingCart = new ShoppingCart();

          // 将原订单详情里面的菜品信息重新复制到购物车对象中
          BeanUtils.copyProperties(orderDetail,shoppingCart,"id");
          shoppingCart.setUserId(userId);
          shoppingCart.setCreateTime(LocalDateTime.now());

          return shoppingCart;
        }).collect(Collectors.toList());


        // 将购物车对象批量添加到数据库
        shoppingCartMapper.insertBantch(shoppingCartList);
    }
    /**
     * 订单搜索
     *
     * @param ordersPageQueryDTO
     * @return
     */
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        PageHelper.startPage(ordersPageQueryDTO.getPage(), ordersPageQueryDTO.getPageSize());

        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);

        // 部分订单状态，需要额外返回订单菜品信息，将Orders转化为OrderVO
        List<OrderVO> orderVOList = getOrderVOList(page);

        return new PageResult(page.getTotal(), orderVOList);
    }


    private List<OrderVO> getOrderVOList(Page<Orders> page) {
        // 需要返回订单菜品信息，自定义OrderVO响应结果
        List<OrderVO> orderVOList = new ArrayList<>();

        List<Orders> ordersList = page.getResult();
        if (!CollectionUtils.isEmpty(ordersList)) {
            for (Orders orders : ordersList) {
                // 将共同字段复制到OrderVO
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                String orderDishes = getOrderDishesStr(orders);

                // 将订单菜品信息封装到orderVO中，并添加到orderVOList
                orderVO.setOrderDishes(orderDishes);
                orderVOList.add(orderVO);
            }
        }
        return orderVOList;
    }

    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(orders.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            String orderDish = x.getName() + "*" + x.getNumber() + ";";
            return orderDish;
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }
    /**
     * 各个状态的订单数量统计
     * @return
     */
    @Override
    public OrderStatisticsVO statistics() {
        // 根据状态，分别查询出待接单、待派送、派送中的订单数量
        Integer toBeConfirmed = orderMapper.countStatus(Orders.TO_BE_CONFIRMED);
        Integer confirmed = orderMapper.countStatus(Orders.CONFIRMED);
        Integer deliveryInProgress = orderMapper.countStatus(Orders.DELIVERY_IN_PROGRESS);

        OrderStatisticsVO orderStatisticsVO = new OrderStatisticsVO();
         orderStatisticsVO.setConfirmed(confirmed);
         orderStatisticsVO.setToBeConfirmed(toBeConfirmed);
         orderStatisticsVO.setDeliveryInProgress(deliveryInProgress);
        return orderStatisticsVO;
    }
    /**
     * 查询订单详情
     * @param id
     * @return
     */
    @Override
    public OrderVO details(Long id) {
        Orders orders = orderMapper.getById(id);
        List<Object> list = new ArrayList<>();
        if (orders == null) {
            return null;
        }
        List<OrderDetail> orderDetailList = orderDetailMapper.getByOrderId(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        orderVO.setOrderDetailList(orderDetailList);
        orderVO.setOrderDishes(getOrderDishesStr(orders));
        return orderVO;
    }
    /**
     * 接单
     * @param ordersConfirmDTO
     * @return
     */
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders = Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }
    /**
     * 拒单
     * @param ordersConfirmDTO
     * @return
     */
    @Override
    public void rejection(OrdersRejectionDTO ordersConfirmDTO) throws Exception {
        Orders ordersDB = orderMapper.getById(ordersConfirmDTO.getId());
        if(ordersDB==null&&!ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED))
        {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
//        Integer payStatus = ordersDB.getPayStatus();
//        if(payStatus == Orders.PAID)
//        {
//            //weChatPayUtil.refund是封装的微信支付退款工具方法，返回退款结果（JSON 字符串或状态码）。
//            //用户已支付，需要退款
//            String refund = weChatPayUtil.refund(
//                    ordersDB.getNumber(),
//                    ordersDB.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款：{}", refund);
//        }
        Orders orders=   Orders.builder()
                .id(ordersConfirmDTO.getId())
                .rejectionReason(ordersConfirmDTO.getRejectionReason())
                .status(Orders.CANCELLED)
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    /**
     * 取消订单
     *
     * @param ordersCancelDTO
     */
    public void cancel(OrdersCancelDTO ordersCancelDTO) throws Exception {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(ordersCancelDTO.getId());

//        //支付状态
//        Integer payStatus = ordersDB.getPayStatus();
//        if (payStatus == 1) {
//            //用户已支付，需要退款
//            String refund = weChatPayUtil.refund(
//                    ordersDB.getNumber(),
//                    ordersDB.getNumber(),
//                    new BigDecimal(0.01),
//                    new BigDecimal(0.01));
//            log.info("申请退款：{}", refund);
//        }

        // 管理端取消订单需要退款，根据订单id更新订单状态、取消原因、取消时间
        Orders orders = new Orders();
        orders.setId(ordersCancelDTO.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }
    /**
     * 派送订单
     * @return
     */
    @Override
    public void delivery(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        if(ordersDB==null||!ordersDB.getStatus().equals(Orders.CONFIRMED))
        {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders =Orders.builder()
                .status(Orders.DELIVERY_IN_PROGRESS)
                .id(id)
                .build();
        orderMapper.update(orders);
    }
    /**
     * 完成订单
     *@param id
     * @return
     */
    @Override
    public void complete(Long id) {
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);
        if(ordersDB==null||!ordersDB.getStatus().equals(Orders.DELIVERY_IN_PROGRESS))
        {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        Orders orders =Orders.builder()
                .status(Orders.COMPLETED)
                .id(id)
                .deliveryTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
    /**
     * 客户催单
     * @param id
     * @return
     */
    @Override
    public void remainder(Long id) {
         Orders ordersDB = orderMapper.getById(id);

         if(ordersDB==null)
         {
             throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
         }
        Map map = new HashMap();
        //1表示来单提醒 2表示客户催单
        map.put("type",2);
        map .put("orderId",id);
        map.put("content","订单号:"+ ordersDB.getNumber());
            //通过websocket向客户端测览器推送消息
        webSocketServer.sendToAllClient(JSON.toJSONString(map));
    }
}
